Hi - I'm new to chickens as of late March this year. I have 10 pullets - 4 red stars and 6 ameraucanas. The red stars started laying eggs about a month ago and the ameraucanas haven't started laying yet. I'm getting anywhere from 1-3 eggs a day on average. They free-range in a 1600 sqft paddock that I rotate to fresh grass every couple of weeks. The chickens are locked up at night in a 12' x 4.5' chicken tractor. They have access to no-soy organic mix full-time, and water is always available. We give them a few treats now and again like tangerines, bread, bananas, cantaloupe and watermelon rinds, and I raise black soldier fly larvae, which I give them probably 20-30 live ones a week.
I noticed a couple of eggs since they started laying with what appears to be meat spots or blood spots. However today I cracked open a large egg (I thought it was a double-yolker since I get one every week or 2) and this is what I found:

As you can see the yolk is oval, mottled, and cloudy, and it has orange with red dots all over it. Beside the yolk in the white area appears to be some sort of hard seed or calcium deposit. I have seen a couple very small black or dark gray chunks attached to the yolk before in other eggs every so often, and figured they were just meat spots. But this one - I have no idea what it is. Any advice or clues as to what's going on here?
I noticed a couple of eggs since they started laying with what appears to be meat spots or blood spots. However today I cracked open a large egg (I thought it was a double-yolker since I get one every week or 2) and this is what I found:
As you can see the yolk is oval, mottled, and cloudy, and it has orange with red dots all over it. Beside the yolk in the white area appears to be some sort of hard seed or calcium deposit. I have seen a couple very small black or dark gray chunks attached to the yolk before in other eggs every so often, and figured they were just meat spots. But this one - I have no idea what it is. Any advice or clues as to what's going on here?